Comparison

Yada vs IQ Test Challenge

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Yada

This app helps you retain information from books and other materials. It uses AI to create memory cards from your highlights and uploaded files, then schedules reviews using spaced repetition science to combat forgetting.

Highlights
  • Turn highlights into retention
  • AI generates cards from uploaded files
  • Memory-based card creation
  • Spaced review scheduling
  • Progress tracking
  • Light and dark modes
Features
Read full description

You read the material. You felt it land. Then weeks later the memories faded. That's not a failure – it's human biology. The mind forgets what it isn't reminded of. But the best ideas deserve to stay. Yada is the memory layer for the knowledge you care about. So what you learn actually compounds. Forever. So you become someone who knows. Yada Pro is available as an auto-renewable subscription. Payment will be charged to your Apple Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Any unused portion of a free trial is forfeited when you purchase a subscription. Subscriptions may be managed, and auto-renewal turned off, in your Account Settings after purchase. Help & Support: founder@learnwithyada.com Terms of Use: https://learnwithyada.com/terms Privacy Policy: https://learnwithyada.com/privacy

About

IQ Test Challenge

Features
Read full description

How smart are you – compared to everyone else? IQ Test Challenge is a free IQ test and brain training app with classic intelligence puzzles. After every test you see where you stand among all players. With the Club membership you also see where you stand among people like you, by country, age group, gender and education. THE IQ TEST Ten tasks across the classic categories, getting harder as you go. No time limit – think as long as you like. At the end you review your answers, submit them and see your score, your IQ estimate with its range and your percentile on the distribution curve of all players. Then go through every task with its solution – Club members also get an explanation for each one. SEVEN CATEGORIES OF CLASSIC PUZZLES - Patterns: matrices, figure series - Numbers: number series, number grids - Spatial: cube nets, rotation vs. mirror image - Memory: figure grids, n-back - Logic: syllogisms, seating plans - Words: analogies, odd word out - Speed: symbol search, colour-word test Every puzzle is generated fresh – you will not run out of tasks. EXAM PREPARATION Practise for aptitude tests, employment tests and entrance exams: 21 tasks from all seven categories, 20 minutes, no feedback between the tasks – like a real test. Afterwards the error analysis shows your gaps per category compared with other players, and you train exactly there. One exam per week is included; with the Club membership it is unlimited and comes with your history. A practice simulation, not an official test. BRAIN TRAINING WITH A REAL COMPARISON Brain training that shows you where you really stand: train memory, logic, numbers, patterns, spatial thinking, words and speed, and compare yourself with real players instead of only with your own past scores. The weakness analysis builds a brain training session from your weakest task types. With the Club membership: a training plan with your progress per category and unlimited training. COMPARE YOURSELF The comparison is the heart of the app. See how your result compares with the whole community. With the Club membership you also see how many players solve each task and which answer others picked. Your data stays anonymous: no account, no sign-up, and your profile details are optional. MORE WAYS TO PLAY - Daily challenge: five tasks, the same for everyone in the world, with a daily ranking - Sudden death: one task after another, one mistake ends the run. With leaderboards worldwide, per country and per week (with Club membership) - Duel: challenge friends with a code – same five tasks, who scores more? - Training: brain training for a single category, without a score - Statistics: your strengths and weaknesses per category, history and IQ estimate over all tests FREE, NO ADS The IQ test, brain training and all game modes are free and without ads: three IQ tests on your first day, then one test and one sudden death run per day. The Club membership (monthly or yearly) unlocks more: explanations for every task, up to five IQ tests a day, unlimited sudden death, duels and training, the sudden death leaderboards, how many players solve each task and which answer others picked, your percentile in every comparison group, all details of your past tests and a crown in the rankings – and you support the further development of the app. The subscription renews automatically and can be cancelled at any time in your store account settings. Note: IQ Test Challenge is made for entertainment and self-assessment. It is not a clinical or diagnostic intelligence test. Privacy policy: https://challenge.iqtest-app.de/privacy-policy-app/ Terms of use: https://challenge.iqtest-app.de/terms-and-conditions/ License agreement (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Yada4 screens
IQ Test Challenge4 screens

Verdict

The call

The clearest difference is ads: IQ Test Challenge at none against Yada's shown. IQ Test Challenge also leads on update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Yada sells 2 in-app purchases, starting at $9.99 per month and IQ Test Challenge sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Yada ships an update weekly, IQ Test Challenge every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 7 level
Yada versus IQ Test Challenge: the parameters behind the verdict, then further details
ParameterYadaIQ Test Challenge
PriceFreeFree
Rating5.0 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyWeeklyEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.0 — better
Further details — not scored
Size81 MB16 MB
Age rating4+4+
DeveloperNANA LABS LTDPaul Stelzer

In-app purchases

2 purchases

Yada

Subscriptions2
  • Yada Pro Monthly$9.991 Month
  • Yada Pro Annual7 Days trial$59.991 Year
2 purchases

IQ Test Challenge

Subscriptions2
  • Club Monthly$1.991 Month
  • Club Yearly3 Days trial$8.991 Year

Questions

Is Yada free?
Yada is free to download, with in-app purchases available.
Is IQ Test Challenge free?
IQ Test Challenge is free to download, with in-app purchases available.
Do Yada or IQ Test Challenge have ads?
Yada shows ads; IQ Test Challenge does not.
Which is updated more often, Yada or IQ Test Challenge?
Yada ships an update weekly, and IQ Test Challenge every 3 days. Most recently, Yada was updated on October 24, 2026 and IQ Test Challenge on October 25, 2026.

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